Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 34, Problem 36CTQ
A scientist is studying a model that has a mutation in the receptor for somatostatin that prevents hormone binding. How would this mutation affect the structure and function of the
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What affect does hydrochloric acid have on pespinogen?
A.Causes pepsinogen to become lipase
B.Causes pepsinogen to become pepsin
C.Causes a positive feedback loop to add more HCl
D.Causes ulcers
As chyme enters the duodenum the intestinal cells release hormones. One hormone, gastric inhibitory peptide (GIP), makes the pancreas release insulin. Why does this make sense?
Many digestive enzymes are produced in the pancreas and released into the duodenum. Why, then, has the mammalian stomach evolved the ability to produce pepsinogen?
Chapter 34 Solutions
Biology 2e
Ch. 34 - Figure 34.11 Which of the following statements...Ch. 34 - Figure 34.12 Which of the following statements...Ch. 34 - Figure 34.19 Which of the following statements...Ch. 34 - Which of the following is a pseudo-ruminant? cow...Ch. 34 - Which of the following statements is untrue?...Ch. 34 - The acidic nature of chyme is neutralized by...Ch. 34 - The digestive juices from the liver are delivered...Ch. 34 - A scientist dissects a new species of animal. If...Ch. 34 - Which of the following statements is not true?...Ch. 34 - Which of the following is a water-soluble vitamin?...
Ch. 34 - What is the primary fuel for the body?...Ch. 34 - Excess glucose is stored as fat glucagon glycogen...Ch. 34 - Many distance runners “carb load” the day before a...Ch. 34 - Where does the majority of protein digestion take...Ch. 34 - Lipases are enzymes that breakdown disaccharides...Ch. 34 - Which of the following conditions is most likely...Ch. 34 - Which hormone controls the release of bile from...Ch. 34 - Which hormone stops acid secretion in the stomach?...Ch. 34 - In the famous conditioning experiment, Pavlov...Ch. 34 - How does the polygastric digestive system aid in...Ch. 34 - How do birds digest their food in the absence of...Ch. 34 - What is the role of the accessory organs in...Ch. 34 - Explain how the villi and microvilli aid in...Ch. 34 - Name two components of the digestive system that...Ch. 34 - What are essential nutrients?Ch. 34 - What is the role of minerals in maintaining good...Ch. 34 - Discuss why obesity is agrowing epidemic.Ch. 34 - There are several nations where mal nourishment is...Ch. 34 - Generally describe bow a piece of bread can power...Ch. 34 - In the 1990s fat-free foods became popular among...Ch. 34 - Explain why some dietary lipid is a necessary part...Ch. 34 - The gut microbiome (the bacterial colonies in the...Ch. 34 - Many mammals become ill if they drink milk as...Ch. 34 - Describe how hormones regulate digestionCh. 34 - Describe one or more scenarios where loss of...Ch. 34 - A scientist is studying a model that has a...
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- Figure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forwardExplain the differences between the digestion roles of the small and large intestines. Does the appendix also have a digestive function?arrow_forwardWhich of the following cells in the stomach produces pepsinogen? a) Main cells b) Neck cells c) Endocrine cells d) Beaker cells e) Parietal cellsarrow_forward
- In the famous conditioning experiment, Pavlov demonstrated that his dogs started drooling in response to a bell sounding. What part of the digestive process did he stimulate? a. cephalic phase b. gastric phase c. intestinal phase d. elimination phasearrow_forwardThe small intestine secretes CCK to a) assist in the breakdown of fats b) stimulate release of pancreatin c) increase bile storage d) inhibit gastrin synthesis through negative feedback e) counteract the presence of secretinarrow_forwardExplain why the pancreas is considered to be both an endocrine and an exocrine gland. How does the pancreas contribute to digestion?arrow_forward
- Which of the following is NOT an accessory organ in the digestive system? a-Liver b-Pancreas c-Duodenum d-Gall bladderarrow_forwardWhen the body is deprived of food, which enzyme hydrolyzes triglycerides so that their parts enter general circulation and are available to other cells? A. Hormone-sensitive lipase B. Pancreatic lipase C. Adipose lipase D. Lipoprotein lipase E. Lingual lipasearrow_forward
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